21223102123023 has 16 divisors (see below), whose sum is σ = 28642338466560. Its totient is φ = 13976599374144.

The previous prime is 21223102123007. The next prime is 21223102123037. The reversal of 21223102123023 is 32032120132212.

It is not a de Polignac number, because 21223102123023 - 2⁴ = 21223102123007 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21223102122984 and 21223102123002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21223102125023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37104361 + ... + 37672002.

It is an arithmetic number, because the mean of its divisors is an integer number (1790146154160).

Almost surely, 2^{21223102123023} is an apocalyptic number.

21223102123023 is a deficient number, since it is larger than the sum of its proper divisors (7419236343537).

21223102123023 is a wasteful number, since it uses less digits than its factorization.

21223102123023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74777518.

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 21223102123023 its reverse (32032120132212), we get a palindrome (53255222255235).

The spelling of 21223102123023 in words is "twenty-one trillion, two hundred twenty-three billion, one hundred two million, one hundred twenty-three thousand, twenty-three".